Antiskid device



H. HELLER.

ANTISKID DEVICE.

APPLlAxoN FILED APR.11.1919.

Patented Aug. 12, 1919.

LHQMUeI/:'Or' H Heller' l @y C ttormeg UNTTED sTATEs PATENT OFFICE.'

HENRY HELLER, OF WINONA, MINNESOTA.

A NTISKID DEVICE.

Application led April 17, 1919.

which the following is a specification.

This invention relates to improvements in aiiti -skid devices for1gehicle wheels and more particularly Ito that?" type comprising a.series of flexible membe-rs adapte-d to be easily attached to pneumatictires of automobiles to prevent skidding of the vehicle.

One of the objects of the presentinyention is to provide a strong anddurable anti-skid device of the albove general character which may beeasily and quickly applied to vehicle wheels. A fui-ther object is toprovide a device of the above character which will -be simple inconstruction and inexpensive to manufacture. A further object is toprovide an -anti-skid device which will be of great efficiency.

Other objects will be in part obvious from the annexed drawings and inpart indicated "in connection therewith by the following analysis ofthis invention.

- f Tlhis invention accordingly consists in the Yflfeatures. Aofconstruction, combination of parts and in the unique relations of theinembers and `in the relative proportioning and disposition thereof; all`as more completely outlined herein.

Figure 1 lis a cross sectional view showing a portion of a tire and apart of the anti-skid device.

Fig. 2 ris 'a fragmentary View showing one of the transverse members andtwo longitudinal members of the device.

Fig. 3 is a perspective View of one of the links;

Fig. 4 is a similar View showing a slight modification.

Referring now to the drawings 'in detail, 5 denotes a section of apneumatic tire of any desired type to which the anti-skid device orchain, as will be hereinafter referred to, is applied. This chain whichis the general arrangement known `as the Weed chaincomprises twolongitudinally disposed members or chains 6 adapted yto extendcircumferentially about the tire and of slightly less Specification ofLetters Patent.

Patented Aug. 12, 1919.

Serial No. 290,804.

maximum diameter than the tire. The ends of the chain are provided withSuitable c0- active fasteners of any desired type and it is believed tobe unnecessary fto sho-w them in this application as the part-s are allof well known construction. At regular intervals, say four or fiveinches, are dis-posed aseries of trz'msverse chains 7 shown in Fig. 2,each of which comprises a series of interlocking links 8, as shown indetail lin Fig. 3.

These links might be termed tobe of general S-shape construction havingelongated free ends 9 extending at su'l'ist-antially right angles to theplane of lthe link. As these links are not ofthe endless or annulartype, a certain amount of yieldability exists thereby preventingbreaklage when subjected to sudden and severe strains. These ends, it isto be noted in Fig. 1, are adapted to extend downwardly from the treadof the tire to form a gripping engagement with the road. The amount towhich the projecting ends 9 are bent may be varied at will and fas shownin Fig. 4 the ends l0 extend at an angle of only about 30. In clay roadsthe form shown in Fig. 3 would be more desirable while on asphalt or onconcrete roads generally existing in cities, the form shown in Fig. 4would [be preferred. These projections 9 noct only perform the functionoff giving greater ei'liciency against skid'ding, but also protect thelinks of the chain from wear, thus increasing the durability of thedevice as a Whole.

The free ends 9 of the links are disposed angularly to the body portionsthereof and to each other, thus affording two gripping contacts on.different longitudinal and transverse lines and greatly increasing theeiiiciency of the device in the prevention of side embodiment of myinvention to be limited thereto, any invent-ion being in tlhe followingclaims to elaim protection upon all the novelty there may be in myinvention, as fully as ythe state of the art Will permitr l Claim:

l. In an anti-skid device, in combination, a flexiblemieinlber Iadaptedto extend transverse] y across the tre-a d of `the tire, said ineinbercomprising a. series of links of general S-shape eonstruotion havingelongated free ends angular-ly disposed to tlhe body portion of the linkand diagonally to eaoh other.

2. In an anti-skid device, in combination, a flexible mem-ber adapted toextend tra-nsversely across fthe tread of the tire, said meinbercomprising a Series of links of general S-shape construction, the freeends of said links being angularly disposed to tlhe body portionsthereof and diagonally to eaeh other and fturned downvvardly to presenta gripping engagement with 'the road. i

3. In an anti-.skid dev-ice, in Combination,

'a flexible member adapted to extend transding effect and prevent wearof the body portions of the links.

el. In a device of the eliaraoter described, rin combination, la parirlof longitudinal ine1nbers adapted to extend cireuinferentially aboutthe tire and transverse members oonneeting said longitudinal members,said )transverse member Compris-ing a series of links of general S-shape construction having elongated free ends angularly disposed to thebody ponti'ons thereof and .diagonally to eac-h other.

5. In a. device of the ehanacter desenibed, in combination, a pair oflongitudinal menibers adapted to extend circuinferentially about lthetire land transverse men'ilbers connecting said longitudinal members,said transverse member Comprising a series olf links of general S-shapeconstruction, the ends of said links being yangularly disposed relativeto the body portions thereof and diagonally to eaCh other and bentdownwardly from the plane of the links thereby to present a Ibettergripping surface with the road. Y

In testimony whereof l allix niy signature 'in presence of two-Witnesses.

HENRY HELLER. Witnesses:

E. D. LIBERA, W. J. SMITH.

